Maybe it's just the copy you have? I have all of Lakeside's Tack and I think only 1 saddle does this to me. Some of SLS's tack did this to me and all I did was delete my copy and re-download and it worked fine. Maybe this will help?

@BaileyNova@winstone it seemed to work with the other tack- but not the bridles? Does anyone know what causes that glitch withthe bridles since i do have on or two other bridles (and manes) that do the same thing